[单选题]
A student constructs an astronomical telz 7x) ei9cy1jj .l,insescope with a magnifica o/ pe./solewo4:;n6aqpivu (tion of 10. If the telescope has a converging lens of focale qpe4 nuwi o;v/6(o.:als p/o length 50 cm, what is the resulting length of the telescope?
A. $53 \; cm$
B. $55 \; cm$
C. $60 \; cm$
D. $75 \; cm$
Post time 2024-1-26 22:03:25